<s>
EIDORS	B-Algorithm
is	O
an	O
open-source	B-Application
software	I-Application
tool	O
box	O
written	O
mainly	O
in	O
MATLAB/GNU	O
Octave	O
designed	O
primarily	O
for	O
image	O
reconstruction	O
from	O
electrical	O
impedance	O
tomography	O
(	O
EIT	O
)	O
data	O
,	O
in	O
a	O
biomedical	O
,	O
industrial	O
or	O
geophysical	O
setting	O
.	O
</s>
<s>
While	O
the	O
name	O
reflects	O
the	O
original	O
intention	O
to	O
cover	O
image	O
reconstruction	O
of	O
data	O
from	O
the	O
mathematically	O
similar	O
near	O
infra	O
red	O
diffuse	B-Algorithm
optical	I-Algorithm
imaging	I-Algorithm
,	O
to	O
date	O
there	O
has	O
been	O
little	O
development	O
in	O
that	O
area	O
.	O
</s>
<s>
The	O
project	O
was	O
launched	O
in	O
1999	O
with	O
a	O
Matlab	B-Language
code	O
for	O
2D	O
EIT	O
reconstruction	O
which	O
had	O
its	O
origin	O
in	O
the	O
PhD	O
thesis	O
of	O
Marko	O
Vauhkonen	O
and	O
the	O
work	O
of	O
his	O
supervisor	O
Jari	O
Kaipio	O
at	O
the	O
University	O
of	O
Kuopio	O
.	O
</s>
<s>
While	O
Kuopio	O
also	O
developed	O
a	O
three	O
dimensional	O
EIT	O
code	O
this	O
was	O
not	O
released	O
as	O
open-source	B-Application
.	O
</s>
<s>
Instead	O
the	O
three	O
dimensional	O
version	O
of	O
EIDORS	B-Algorithm
was	O
developed	O
from	O
work	O
done	O
at	O
UMIST	O
(	O
now	O
University	O
of	O
Manchester	O
)	O
by	O
Nick	O
Polydorides	O
and	O
William	O
Lionheart	O
.	O
</s>
<s>
The	O
forward	O
models	O
in	O
EIDORS	B-Algorithm
use	O
the	O
finite	B-Application
element	I-Application
method	I-Application
and	O
this	O
requires	O
mesh	O
generation	O
for	O
sometimes	O
irregular	O
objects	O
(	O
such	O
as	O
human	O
bodies	O
)	O
,	O
and	O
the	O
meshing	O
needs	O
to	O
reflect	O
the	O
electrodes	O
used	O
to	O
drive	O
and	O
measure	O
current	O
in	O
EIT	O
.	O
</s>
<s>
The	O
EIDORS	B-Algorithm
project	O
also	O
includes	O
a	O
repository	O
of	O
EIT	O
data	O
distributed	O
under	O
open-source	B-Application
licenses	O
.	O
</s>
<s>
EIDORS	B-Algorithm
has	O
been	O
extensively	O
used	O
in	O
biomedical	O
applications	O
of	O
EIT	O
,	O
including	O
lung	O
imaging	O
,	O
measuring	O
cardiac	O
output	O
.	O
</s>
